/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;

namespace Composite.Community.Twitter.FeedAggregator
{
	/// <summary>
	/// Extensions for Xml.Linq v1.0
	/// </summary>
	internal static class XExtensions
	{
		public static string AttributeValue(this XElement element, XName attributeName)
		{
			return element.Attributes(attributeName).Select(d => d.Value).FirstOrDefault();
		}

		public static string ElementValue(this XElement element, XName elementName)
		{
			return element.Elements(elementName).Select(d => d.Value).FirstOrDefault();
		}

		public static IEnumerable<T> NotNull<T>(this IEnumerable<T> source)
		{
			return source.Where(d => d != null);
		}
	}
}
